2004 GMC SIERRA Owner's Manual

{CAUTION:
If a ®re starts while you are refueling, do not
remove the nozzle. Shut off the ¯ow of fuel by
shutting off the pump or by notifying the
station attendant. Leave the area immediately.
Notice:If you need a new fuel cap, be sure to get
the right type. Your dealer can get one for you.
If you get the wrong type, it may not ®t properly.
This may cause your malfunction indicator lamp to
light and may damage your fuel tank and emissions
system. See
Malfunction Indicator Lamp on
page 3-49.
Filling a Portable Fuel Container
{CAUTION:
Never ®ll a portable fuel container while it is in
your vehicle. Static electricity discharge from
the container can ignite the gasoline vapor.
You can be badly burned and your vehicle
damaged if this occurs. To help avoid injury to
you and others:
·Dispense gasoline only into approved
containers.
·Do not ®ll a container while it is inside a
vehicle, in a vehicle's trunk, pickup bed or
on any surface other than the ground.
·Bring the ®ll nozzle in contact with the
inside of the ®ll opening before operating
the nozzle. Contact should be maintained
until the ®lling is complete.
·Do not smoke while pumping gasoline.
5-9

Checking Things Under
the Hood
{CAUTION:
Things that burn can get on hot engine parts
and start a ®re. These include liquids like fuel,
oil, coolant, brake ¯uid, windshield washer and
other ¯uids, and plastic or rubber. You or
others could be burned. Be careful not to drop
or spill things that will burn onto a hot engine.
Hood Release
To open the hood do the following:
1. Pull the handle inside
the vehicle located
under and to the left of
the steering wheel.
5-10

2. Then go to the front of the vehicle and pull up on
the secondary hood release located near the
center of the grill.
3. Lift the hood.
Before closing the hood, be sure all ®ller caps are
on properly. Pull down the hood and close it ®rmly.
5-11

Engine Compartment Overview
When you lift up the hood on the VORTECŸ 4300 V6 engine, you'll see the following:
5-12

A. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-23.
B. Coolant Surge Tank. See
Engine Coolant on
page 5-33.
C. Air Filter Restriction Indicator (If Equipped). See
Engine Air Cleaner/Filter on page 5-23.
D. Engine Oil Dipstick. See
Engine Oil on page 5-18.
E. Automatic Transmission Dipstick (If equipped).
See
Automatic Transmission Fluid (Except Allison
Transmissionž) on page 5-25orAutomatic
Transmission Fluid (Allison Transmissionž)on
page 5-28.
F. Fan. See
Cooling System on page 5-39.
G. Engine Oil Fill. See
Engine Oil on page 5-18.H. Power Steering Fluid Reservoir. See
Power Steering
Fluid on page 5-45.
I. Remote Negative (-) Terminal (GND). See
Jump
Starting on page 5-53.
J. Remote Positive (+) Terminal. See
Jump Starting on
page 5-53.
K. Brake Fluid Reservoir. See
Brakes on page 5-48.
L. Clutch Fluid Reservoir (If Equipped). See
Hydraulic
Clutch on page 5-32.
M. Underhood Fuse Block. See
Fuses and Circuit
Breakers on page 5-126.
N. Battery. See
Battery on page 5-52.
O. Windshield Washer Fluid Reservoir. See
Windshield
Washer Fluid on page 5-46.
5-13

When you lift up the hood on the VORTECŸ 5300 V8 engine (VORTECŸ 4800 and 6000 V8 engines similar), you
will see the following:
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A. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-23.
B. Coolant Surge Tank. See
Engine Coolant on
page 5-33.
C. Air Filter Restriction Indicator (If Equipped). See
Engine Air Cleaner/Filter on page 5-23.
D. Engine Oil Dipstick. See
Engine Oil on page 5-18.
E. Automatic Transmission Dipstick (If Equipped).
See
Automatic Transmission Fluid (Except Allison
Transmissionž) on page 5-25orAutomatic
Transmission Fluid (Allison Transmissionž)on
page 5-28.
F. Engine Oil Fill. See
Engine Oil on page 5-18.
G. Fan. See
Cooling System on page 5-39.H. Remote Negative (-) Terminal (GND). See
Jump
Starting on page 5-53.
I. Power Steering Fluid Reservoir. See
Power Steering
Fluid on page 5-45.
J. Remote Positive (+) Terminal. See
Jump Starting on
page 5-53.
K. Brake Fluid Reservoir. See
Brakes on page 5-48.
L. Clutch Fluid Reservoir (If Equipped). See
Hydraulic
Clutch on page 5-32.
M. Underhood Fuse Block. See
Fuses and Circuit
Breakers on page 5-126.
N. Battery. See
Battery on page 5-52.
O. Windshield Washer Fluid Reservoir. See
Windshield
Washer Fluid on page 5-46.
5-15

When you lift up the hood on the VORTECŸ 8100 V8 engine you will see the following:
5-16